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Handpumps

No change in size, 18:38, 12 April 2012

→‎Construction, operations and maintenance

==Construction, operations and maintenance==

[[Image:DirectActionHandpump.jpg|thumb|right|~~350px~~300px| Direct action handpump mechanics.]]

There are many different types of handpumps. However most of them are positive displacement pumps and have reciprocating pistons or plungers. There are suction pumps, low lift pumps, direct action pumps, intermediate life pumps, and high lift pumps. For details on these types, look them up in [http://www.wateraid.org/uk/what_we_do/sustainable_technologies/technology_notes/244.asp Technology notes: Handpumps] (by WaterAid).

====The VLOM concept====

[[Image:VillageHandpump.jpg|thumb|right|~~350px~~300px| A handpump in Apowugo village, Ghana. <br> Credit: WaterAid / Jon Spaull]]

The term VLOM (Village Level Operation and Maintenance) was coined during the World Bank / UNDP Rural Water Supply Handpumps Project which, from 1981 - 91, considered the availability around the world at that time of handpump technologies and maintenance systems.

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